If Object A Exerts a Force on Object B, then Object B Exerts an Equal, Oppositely Directed, and Simultaneous Force on Object A Newton’s Third Law For Every Action There is an Equal and Opposite Reaction
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If Object A Exerts a Force on Object B, then Object B Exerts an Equal, Oppositely Directed, and Simultaneous Force on Object A
Newton’s Third Law
For Every Action There is an Equal and Opposite Reaction
If your feet push down on the floor, what does the floor do?
A. NothingB. Absorbs the pushC. Pushes up on your feet, but with less forceD. Pushes up on your feet with an equal forceE. Pushes up on your feet with greater force
Newton 3
Can the floor push up on your feet with a force greater than your weight?
A. Yes, but nothing will happenB. Yes, you will accelerate up into the airC. No, it always equals your weightD. No, it can only equal or be less than your
weightE. Yes, but only on a planet with stronger
gravity Newton 3
What is the force from that causes a car to accelerate down the road?
A. The engineB. The transmissionC. The pistonsD. The roadE. The tires
Newton 3
What is the force from that causes a swimmer to accelerate across a pool?
A. The swimmer’s legsB. The swimmers armsC. The swimmer’s arms and legsD. GravityE. The water
Newton 3
Which force probe will measure the greatest force?
A. The one pulled by the teacherB. The one attached to the ring standC. Both will measure the same forceD. Either one depending on how the teacher pulls
Newton 3
The Earth pulls on the Moon with gravity, causing it to orbit. What does the Moon do
to the Earth?
A. Pulls on the Earth with equal gravity, causing it to orbit
B. Nothing, it is too smallC. Pulls on the Earth with less gravity, having no
effectD. Pulls on the Earth with less gravity, causing
tidesNewton 3
The Earth orbits a point about ¾ of the distance from its center to its surface (not to scale)
The Earth pulls on you with the force of gravity, what is the reaction to this force?A. Normal forceB. You pull on the Earth with an
equal force of gravityC. You pull on the Earth with a
smaller force of gravityD. Nothing, only the Earth has
gravity
Newton 3
MEarth
The Forces are the same but the Masses and Accelerations are different
F= a
Earth
FMPerson
= aPerson
A gun shoots a bullet, which received the greatest force?
A. The bulletB. The gunC. Each received an equal forceD. Depends on the size of the bullet
Newton 3
MGun
F= a
Gun
FMBullet
= aBullet
The Forces are the same but the Masses and Accelerations are different
A bug splatters on a windshield, which received the greatest force?
A. The windshieldB. The bugC. Each received an equal forceD. Depends on the size of the bug
Newton 3
MCar
F= a
Car
FMBug
= aBug
The Forces are the same but the Masses and Accelerations are different
What was the last thing to go through the bug’s mind?
His Butt!
In the tug-of-war, what is the reading on the scale?
A. 0 NB. 1000 NC. 2000 ND. 3000 N
1000 N 1000 N0
3000
2000
1000
The tree pulls just like the tug-of-war team. If the pull is only from one
side, the tension is zero.
What will the scale read that is pulled from both sides by 10 N weights?
A. 0 NB. 10 NC. 20 ND. 30 N
What will be the effect of adding a sail to the fan cart?
A. SlowerB. FasterC. No effectD. First faster, then slowerE. First slower, then faster
Which force probe will measure the greatest force?
If Object A Exerts a Force on Object B, then Object B Exerts an Equal, Oppositely Directed, and Simultaneous Force on Object A
Newton’s Third Law
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